Harrow construction



Nov. 1s, 1941. d SNLYOUNGI 2,262,908

HARROW CONSTRUCTION A Filed Sept. 14, 1940 2 Sheets-Sheet 1 Nov'. 18, 1941. s. M. YOUNG 2,262,908

HARROW CONSTRUCTION Filed Sept. 14, 1940 2 Sheets-$11661', 2

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Patented Nov. 18, 1941 UNITED STATES PATENT OFFICE 2,26g9os v n HARROW CONSTRUCTION Stephen M. Young, Hamilton, Ontario, Canada, assigner to International Harveste'er.Company,r Chicago, Ill., a corporation of New Jersey Application September 14, 1940, Serial No. 356,766`

14 Claims.

This invention relates to a harrow construction. f .v

More specically it relates to a harrow construction of which both front and rear gangsvmay be angled jointly, and the rear gangs may be angled separately.

yIn harrow constructions it is desirable to have i'.

provision for joint adjustment of the front and rear gangs of a harrow as well as separate adjustment of the rear gangs;

An object of the present invention is to provide an improved harrow.

A further object lis the provision of a tandem harrow of which the front set of gangs are adjustable jointly with the rear set and the one set may be` adjusted independently of the other set. Another yobject is the provision'of a tandem narrow in which front and rear gangs may be adjusted jointly andthe rear gangs maybe adjusted separately'.

According to the present invention an adjustable lever is mounted on the front frame of a tandem harrow, One end of the lever is connected to the front gangs of the harrow and the other end is connected to the rear gangs pivoted at 26 to a front mid-point of the frame I4.V The partsjust described constitute a means by which the rear gangs of the harrow have a flexible connection with the front gangs and yet are made to follow directly behind the front gangs. This'construction is claimed and describedA more fully in the copending application o'f Stephen M. Young, Serial No. 337,233, filed May 25, 1940. f f f As seen in Figure 1, a lever 21 is mounted at Il 28 on a'horizontal pivot on the front framel I0.

by an adjustable connection comprising a rod f Figure 2 is a side elevation of a second'fo'rm of harrow; and, v

Figure is a plan vview of the narrow of Figure 1.

The form of harrow of Figures l and 3 comprises a front frame I0, a pair of front gangs II connected -adjacent their outer ends to the front frame by means of straps I2 and I3, a rear frame I4,v and rear gangs I5 connected adjacent their outer ends, as at I6, to the rear frame. The rearframe I4 is connected to the outer ends of the front gangs II by means of linksr I1 connected at I8 to the front gangs. Each link I1 comprises a lower member I9 passing beneath the front portion of the rear frame I4 and an upper member 20 secured at 2| to the lower member I9 adjacent its point of connection with a front gang II at I8 and passing over the rear frame I4 and having a slidable connection at its rear end in a member 22 forming part of the rear frame. The rear end of each'lower member I 9 is connected t0 an intermediate portion of the upper member 2o by means of a bolt 23 which also serves as a point of connection for one end ,of a link `24 connected in turn to a lever 25 Links 29 connect the lower end of the lever '21 and the inner ends of the front gangs. A triangular framework 30 is connected -atv3-I to the upper end of the lever 21, and from` `this l frameworkextends a rod 32 in telescoping relation within a tube 33. The tube 33 is slidably mounted in a tube 34 slidably supported by a strap 35 on the rear frame I4. A str-ap 36 `is secured to the front end of the tube 34. `Rods 3 1 connect the strap 36 and the `inner ends of the rear gangs I5, as at 38. Forward movement of the tube 33 within the tube 34 is limited by a cotter pin 39 connected by a chain 40a to a cotter pin 4I),v The cotter pin may extend through tube 33 in arnumber of positions and, when `not in use, may hang from chain 40a connected to tube 33 by cotter pin 40, which extends through tube'33 and is permanently connected thereto.v

The front end of the tube 33 carries a standard 33a, to which is'pivotally connected a nut 4I. A threaded crank 42 engages the nut 4I and is rotatably supported against axial movement in a collar 43 carried by the framework 30. vThe lever 21 carries a nut 44 which is engaged by a threaded crank 45 rotatably supported against axial movement in a collar 46 carried by a member`41 secured'to the front frame Ill and braced by a member 41.

Joint adjustment of the front and rear gangs is elected through rotation of the crank 45, which causes an angular movement of the lever 21. The lower end of the lever causes movement of the inner end of the front gangs through the links 29, and the upper end of the lever 21 causes movement of the inner ends of the rear gangs by means of the framework 30, the rod 32, the tubes 33 and 34, Cotter pin 39 or 40, and the bent rod 31. In movement of the Vrear gangs from transportposition to working position, in which the inner ends of the rear gangs extend forwardly, forward movement of the tube 33 effects a forward movement of the tube 34. In movement of the gangs from working position to transport position, rearward movement of the tube 33 is Without effect on the tube 34, and, accordingly, without effect on the rear gangs i5. Draft forces upon the rear gangs during forward movement of the harrowcause the inner ends of the rear gangs to be moved rearwardly into transport position. Separate adjustment of the rear gangs is had by rotation of the ,crank `42. As the crank is rotated, the nut 4| is adjusted laxially of the crank and the sleeve 33 is moved along the rod 32, thus causing adjustment of the rear gangs.

By` removal of the cotter pin 39 from thetube 33, movement of this tube Veither forwardly ory rearwardly is completely Without effct'upon the v tube 34. Consequently, the rearjjgangs maybe kept in straightened or transport position through draft forces, and thefront Vgangs are angled as desired, so that the harrow operates as an out-throw harrow. It may also be operated as an fin-throw iharrowwith the front gangs in straight position, the :cotter pin 39 inserted through the tube.33, as shown, and adjustment of the rear gangs to Working position by means of `,the crank 42.

In the modification of FigureZ, the nut 4| and the threaded crankj42 of Eigure :1 are rearcuate sector 49. The arcuate sector Vissecured to a rod 50 connected at its forward end by a Vthe sleeve 33. A detent mechanism4 53 fixes the lever 48 to .the arcuate -sector 49. Joint adjustment of the front and rear gangs of ltheharrow of Figure 2 is had in the :same way as with the harrow -of ligure 1, that is, by .rotation of the adjustment y0f front and rear gangs.

crank 45. Separate adjustment of the rear gangs the .rear gangs, relative `movement of a 4sleeve i:

member over a-'rod .forming part of the connection with the rear gangs.u In the V one modification, adjustment of the'sleeve withrespectto the rod is effected lby rotation 4of a threaded crank whichmoves a nut lsecured to the sleeve along the crank. `In rthe other modicatiom' relative movement of thesleevejis effected b y langular movement of a lever with respect to a sector. The intention is to limit the invention only within the `scope of the appended claimsu v What is claimed is: j

1. In 'a harrowcomprisingapair of front gangs,

la 'frame connected thereto, a pair of rear gangs,

a rear frame fconnected thereto, the combination therewith of means connecting a frame and the front lgangs for adjusting both frontgangs jointly, means connecting va frame and the -rear gangs for `adjusting 'both rear gangs simultaneously,

, 'one of the laforementioned meansincluding a pair yof telescoping parts adjustablygxablewith respect'to lone another, and vmeans for operating thetvvo, 'aforementioned means simultaneously Afor joint adjustment of :front 4and rear gangs.

2.v In a'harrow comprising a pair of front gangs, a front frame connected thereto, a pair of rear gangs, a rear frame connected thereto, the combinaton therewith of means connecting a frame and the front gangs for adjusting both front gangs jointly, means connecting the same frame and the rear gangs for adjusting both rear gangs simultaneously, one of the aforementioned means including a pair of telescoping parts adjustably xable with respect to one another, and means for operating the two 'aforementioned means simultaneously for joint adjustment of front and real giIlgS. l

3. In a harrow comprising a pair of front gangs, a front frame connected thereto, a pair of rear gangs, a, rear frame connected thereto, the combination therewith of means connecting a frame and the front gangs for adjusting both front gangs jointly, means connecting the same frame and the rear gangs for adjusting both rear gangs simultaneously, said means including a pair vof telescoping parts adjustably Xable with respect to one another, and means for operating the two aforementioned means simultaneously for joint radjustment of front and rear gangs.

4. In a harrow comprising a pair of front gangs, a front frame connected thereto, a pairY ofrear gangs, a rear frame connected thereto, thecombination therewith of meansconnecting a frame and' the front gangs for adjusting bothfront gangs jointly, means connecting a frame and the rear gangs for adjusting both rear gangs simultaneously, said means yincluding a pair of telescoping p'arts adjustably iXable with respect to one another, and means for operatingthe two aforementioned means simultaneously for joint 5. In a harrow comprising a pair of front gangs, a front frame connected thereto, a pair of rear gangs, a rear frame connectedV thereto, the combination therewith of 'means connecting the front frame and front gangs for angling the front gangs, means lconnecting the rear gangs and the front frame for angling the rear gangs, saidmeans comprising telescoping parts adjustably xable with respect to one another, and means for operating the two vaforementioned means simultaneously for simultaneous` adjustment of front and rear gangs. y n

6. In a harrow comprisingV a pair of front gangs, a front frame connected thereto, 4a pair of reargangs, a rear frame connected thereto, the vcombination therewith of a lever mounted on the front frame, means connecting the lever and the front gangs, means connecting .the lever and the real` gangs including telescoping parts f adjustably Aiixable with respect to one another, and means for moving the lever angularly for effecting joint adjustment of front and. rear gangs.

7. In a harrow comprising a pair of gangs, a front frame connected thereto, a pair of rear gangs, al rear frame connected thereto,

`the combination therewith of a vertically exf tending lever mounted between its ends on the front frame, means connecting the lower lend of the :lever and the front gangs, means connecting the upper end of the lever yand the rear gangs including telescoping parts adjustably fiXable with respect to one another, and means vfor moving the lever angularly for effecting joint adjust- Y Afront celescoping part, and a rotatable crank connected with the other telescoping part and having threaded engagement with the nut.

10. In a harrow comprising a pair of front gangs, a front frame connected thereto, a pair of rear gangs, a rear frame connected thereto, the combination therewith of a vertically extending lever pivotally mounted between its ends on the front frame, means connecting the lower end of the lever and the front gangs, means Aconnecting the upper end of the lever and the rear gangs comprising a tube connected with the rear gangs and a rod extending into the tube and connected with the upper end of the lever, a nut connected with the tube, a rotatable crank supported by the rod and the upper end of the lever and having threaded engagement with the nut, and means for moving the lever angularly for joint adjustment of front and rear gangs.

11. In a harrow comprising a pair of front gangs, a front frame connected thereto, a pair of rear gangs, a rear frame connected thereto, the combination therewith of a vertically eX- tending lever pivotally mounted between its ends on the front frame, means connecting the lower end of the lever and the front gangs, means connecting the upper end of the lever and the rear gangs comprising a tube connected with the rear gangs and a rod extending into the tube and connected with the upper end of the lever, a second lever mounted adjacent the connection of the aforementioned lever and the rod, a link connecting the second lever and the sleeve, and means for moving the said aforementioned lever angularly for effecting joint adjustment of front and rear gangs.

12. In a harrow comprising a pair of front gangs a front frame connected thereto, a pair of rear gangs, a rear frame connected thereto, the combination therewith of a vertically eX- tending lever pivotally mounted between its ends on the front frame, means connecting the lower end of the lever and the front gangs, means connecting the upper end of the lever and the rear gangs comprising a tube connected with the rear gangs and a rod extending into the tube and connected within the upper end of the lever, an arcuate toothed segment mounted adjacent the connection of the lever and the rod, a second lever pivotally mounted for angular movement with respect to the aforementioned lever and being xable in a plurality of angular positions by means of the arcuate segment, and means for moving the first-mentioned lever angularly for electing joint adjustment of front and rear gangs.

13. In a narrow comprising a pair of front gangs, a frame connected thereto, a pair of rear gangs, a rear frame connected thereto, adjusting means mounted on the front frame, means connecting the front gangs and the adjusting means, the combination with the adjusting means of means connecting the adjusting means and the rear gangs and comprising parts connected for relative sliding movement `and stop means connected with one part for limiting relative movement between the parts in one direction and removable for causing the front gangs to operate in angled working position with the rear gangs in straight transport position.

14. In a harrow comprising a pair of front gangs, a front frameconnected thereto, a pair of rear gangs, a rear frame connected thereto, the combination therewith of a vertically extending lever mounted between its ends on the front Hama-means connecting the lower end of the lever and the front gangs, means connecting the upper end of the lever and the rear gangs including parts adjustably connected to one another or relative sliding movement, stop means connected with one part for limiting the relative sliding movement in one direction and being removable for causing the front gangs to operate in working position with the rear gangs in straight or transport position.

STEPHEN M. YOUNG. 

